共搜索到7142条信息,每页显示10条信息,共715页。用时:0小时0分0秒890毫秒
摘 要:<正>Fluid flow characteristics in a four-strand tundish with gas blowing were studied by water modeling experiments.It is found that gas blowing... the minimum residence time.The gas blowing location,gas flow rate,and porous plug area greatly influence the flow characteristics in the tundish;the gas blowing location near the baffle,smaller gas flow rate......
Metallurgical Reaction Characteristic for the Combined Blowing Process of Top-Bottom Blown Oxygen and Bottom Blown Natural Gas颜广庭,唐萍,张淑筠摘 要:<正> The experiment was carried out in a combinedblowing converter.The natural gas was supplied asthe cooling medium for the bottom lance.The blow-ing practice of medium P hot metal(0.30-0.85% [P]) indicated......
of 1500 mm×280 mm and argon blowing, the rationalities of estimating the level fluctuation by three traditional quantitative approaches were discussed, and the effects of gas flowrate, casting speed...Physical modeling of gas-liquid interfacial fluctuation in a thick slab continuous casting mold with argon blowingShu-guo Zheng and Miao-yong Zhu School of Materials and Metallurgy, Northeastern......
VOLUMETRIC MASS TRANSFER COEFFICIENT BETWEEN SLAG AND METAL IN COMBINED BLOWING CONVERTER Z.S.Zou1,W.Wu2,Z.H.Wu1 (1.School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China;2.Gentral Iron & Steel Research Institute, Beijing 100081, Ghina) Abstract:The effects of operation parameters of combined blowing converter on the volumetric mass transfer coefficient between......
[1-3]{Harby, 2014 #139;Harby, 2017 #35;Liu, 2018 #865}, nuclear [4, 5] and metallurgical [5-9] industries. Such bottom-blowing technology is often utilized in metallurgical processes. Here, the gas... fluctuation. WEI et al [18, 19] studied the effect of the gas expansion on nozzle and refractory measuring the pressure (magnitude and frequency) via pressure sensor. Gas blowing rate, Tuyére number......
purification of metallurgical grade silicon (MG-Si) by a combination of Si-Al solvent refining and gas blowing treatment was proposed. The morphologies and transformation of impurity phases, especially for boron and iron in Si-Al melt were investigated during Ar-H2 gas blowing treatment. The mechanism of boron removal was discussed. The results indicate that gas blowing can refine grain size and increase......
Gas Quenching Small Components Paul Stratton1 (1.BOC, Sheffield, UK) 摘要:Gas quenching is an environmentally friendly and effective way of quenching components. However it has not been possible to apply it to small components because of the difficulties of jigging. A method of gas quenching such small components is described in which they are levitated in a confined gas stream. The method......
中间包内吹气与卷渣行为的水模拟研究王海奇1,2,包燕平2,唐德池2(1.湖南省娄底市湖南华菱涟源钢铁有限公司2.北京市北京科技大学 冶金与生态工程学院)摘 要:以某钢厂中间包为原型,建立与原型尺寸为1∶3的水模型,研究中间包采用气幕挡墙时,流体流动行为及钢渣卷混现象,考察吹气量和气体在流体中行程对钢渣界面的影响规律.研究表明:正常浇铸条件下避免钢液卷渣的临界吹气量在0.14m3/h,中间包液面出现渣眼的临界吹氩量为0.10~0.12m3/h,超过临界吹气量后,渣眼加速扩增.关键词:中间包; 气幕挡......
转炉提钒复吹长寿技术研究与应用李安林1(1.四川省攀枝花市攀钢集团研究院有限公司)摘 要:针对转炉复吹提钒存在供气能力不足,复吹寿命短,冶金效果不好等问题,开展了底吹透气砖结构优化,底吹供气系统优化设计,复吹提钒工艺及透气砖维护等技术的研究与应用.研究及大量的应用结果表明:采用新技术后可使提钒转炉底吹供气强度提高到0.10m3/(min·t)以上,提钒复吹长寿化,复吹炉龄大幅提高到7 455炉,复吹比100%,钒渣质量明显改善,渣中w(TFe)降低了2.42%,钒渣w(V2O5)提高了1.65%.......
Accelerated Gas Carburizing (URX Gas Carburizing) Hiroyuki Nakatsu1,Mamoru Kamitani1,Yoshikazu Shimosato1 (1.Chugai Ro Co., Ltd., Osaka, Japan) 摘要:URX gas carburizing is an accelerated gas carburizing method with 50% CO + 50% H2 gas which comes from CH4 gas + CO2 gas. By using this gas composition, the carburizing reaction rate increases to the maximum and the controllability of carbon......